Ventilating means.



Patented Apr. 30, l90l.

W. S. HADAWAY, 1R. VENTILATING MEANS.

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No. 673,078. Patentd Apr. 30, 190i. W. S. H-ADAWAY, 1R.

VENTILATING MEANS.

(Application filed Aug. 28, 1900.,

(No Model.)

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' VENTILATING MEANS.

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UNITED STATES" PATENT) OFFICE.

WILLIAM s. HADAWAY, JR, OF EAST ORANGE, NEW JERSEY.

VENTILATING M EANS.

$PECIFIGATION forming part of Letters Patent No. 673,078, dated April 30, 1901.

Application filed August 28, 1900. Serial No. 28,367. (No model.)

To all whom it may concern.-

Be it known that 1, WILLIAM S. HADAWAY, Jr., a citizen of the United States, residing in East Orange, in the county of Essex and State of New Jersey, have invented a certain new and useful Improvement in Ventilating Means, of which the following is a specification.

In localities where water is evaporated in large quantities or where for any reason much wet steam is disengaged it is found very difficult to produce proper ventilation, owing to the clogging effect of steam near the point of condensation. It has been for some time a desideratum to supply adequate means whereby wet steam thus disengaged in factories, labo-.

ratories, and the like might be removed and a source of great discomfort and danger to health thus obviated.

It is the object of my invention to accomplish the end above stated with elficiency and economy, and the means which embody said invention are illustrated with reference to one specific use in the accompanying drawings, wherein Figure 1 is a cross-sectional view of a hatsizing factory equipped with my invention. Fig. 2 is a cross-section of one pair of tubs as used in said factory, showing the parts on a larger scale. Fig. 3 is a plan view of the same factory, showing fully the arrangement of tubs and steam-pipes employed; and Fig. 4 is a vertical longitudinal section of a single tub, showing the double cover and intermediate space.

In sizing hats it is necessary to employ tubs of constantly-boiling water, into which the hats are dipped, and in the rooms devoted to this purpose the air soon becomes filled with the hot wet steam given off from the vats or tubs so used. The atmospheric condition thus produced is injurious to health andhighly uncomfortable; but hitherto adequate means have not been supplied for obviating this difficulty. By the use of my invention shops of this kind and, indeed, all rooms containing wet steam can be rapidly and efficiently ventilated.

In the drawings the tubs for boiling water are shown at 1, preferably disposed in double rows on opposite sides of a room of appropriate shape for better accommodation of the workmen, who face each other in pairs at each double row. The water in these tubs is heated by means of steam supplied from a system of piping, comprising two main pipes 2, through the middle of each double row of tubs, as shown. Each tub is fed by a branch pipe 3, leading out of the nearest main pipe 2. Separating the opposing tubs in each row there extends a main conduit 4, made of any appropriate material. It is through this conduit that the steam-mains extend. These mains enter at one end of each conduit 4, and the other end communicates directly with a discharge-opening 5, communicating with a chimney 6, a blower 7, or other appropriate form of draft-producer. The conduit 4 thus acts both to inclose the steam-mains and as a ventilating-duct.

Over each tub I place a cover made double, the under part 8 being of thin metal and the upper part 9 being preferably of wood. Between the front edge of this cover and the front of the tub is left a space 10, through which the workmen may dip the hats into the water and out of which the wet steam escapes. The chimney 6 or fan 7 produces a draft inward between the parts of all the double covers 8 9, as indicated by the arrows, Fig. 2. The effect of this draft is to draw the wet steam in a thin layer over the thin metal cover 8, which is kept constantly hot by the steam and water in the tub. The escaping steam being out of contact with water thus receives a preliminary drying, and condensation in these preliminary ducts is prevented. These ducts I have termed preliminary heating means. As soon as the hot air and wet steam reach the conduit 4, they come in contact with the main steam-ducts 2, which are heatedsomewhat above 212 Fahrenheit, and the mixture is heated considerably above dew-point. The result is that instead of wet vapor hanging in air the ventilating means acts upon simple hot air, and the result is the perfectly successful removal of all vapor from the tubs. Indeed by using this system the vapor isnot even allowed to enter the working room itself, but is intercepted at the point of entrance.

It will be understood that my invention is applicable to any locality liable to be filled with vapors, and said invention is also not limited to the use of the same heating means within the ventilating-conduit as are employed for heating the water to create the vapor, although such an arrangement is preferred for obvious reasons.

Various modifications may be made in the construction of parts comprising my invention without departing from the spirit thereof, and I do not wish to be understood as limiting myself to the precise details herein shown and described.

What I claim is 1. In a means for ventilating a sizing plant I having a row of tubs for hot water, a main conduit parallel to said row of tubs, means for drawing air from said tubs through said conduit to the outer air, and heating means within said conduit of a capacity adequate to convert the vapor carried from said tubs into dry steam, whereby a relatively small draftproducer may be efficiently used in all states of the weather.

2. In a means for ventilating a sizing plant having a row of tubs for hot water, a main conduit parallel to said row of tubs, means for drawing air from said tubs through said conduit to the outer air, a main steam-pipe within said conduit of a capacity adequate to convert the vapor discharged from said tubs 1 into dry steam, branch steam-pipes connecting said main pipe with the tubs for heating the water in said tubs, and preliminary heating means in the path of the vapor from each tub to the main conduit.

3. A tub for boiling water, a double cover over said tub the lower member of which is of metal, said cover including an exit space or duct communicating with the space over said tub and means for drawing vapor directly from the top of the tub through said double cover.

4. A tub for boiling water and a double cover over said tub arranged so as to leave an opening into said tub, said cover comprising a lower metal plate, an upper wall and an inclosed duct between them; in combination with a system of steam-pipes for heating water in said tub, a ventilating-conduit surrounding a part of said system, into which said double-cover duct leads and means for drawing vapor from said tub through said cover-duct and conduit and over said steampipe.

WILLIAM S. HADAWAY, JR.

Witnesses:

OSCAR O. SEYFERT, H. S. MAOKAYE. 

